Ma'aseh Toviyyah or Ma'aseh Tobiyyah ("Work of Tobias") was an encyclopedic scientific reference book written by Tobias Cohn

Tobias Cohn

Tobias Cohn or Tobias Kohn was a Polish-Jewish physician of the seventeenth and eighteenth centuries...

. It was published in Venice, Italy in 1707, and reprinted there in 1715, 1728, 1769, and 1850.

The work is divided into eight parts: (1) theology

Theology

Theology is the systematic and rational study of religion and its influences and of the nature of religious truths, or the learned profession acquired by completing specialized training in religious studies, usually at a university or school of divinity or seminary.-Definition:Augustine of Hippo...

; (2) astronomy

Astronomy

Astronomy is a natural science that deals with the study of celestial objects and phenomena that originate outside the atmosphere of Earth...

; (3) medicine

Medicine

Medicine is the science and art of healing. It encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness....

; (4) hygiene

Hygiene

Hygiene refers to the set of practices perceived by a community to be associated with the preservation of health and healthy living. While in modern medical sciences there is a set of standards of hygiene recommended for different situations, what is considered hygienic or not can vary between...

; (5) Syphilitic maladies

Syphilis

Syphilis is a sexually transmitted infection caused by the spirochete bacterium Treponema pallidum subspecies pallidum. The primary route of transmission is through sexual contact; however, it may also be transmitted from mother to fetus during pregnancy or at birth, resulting in congenital syphilis...

; (6) botany

Botany

Botany, plant science, or plant biology is a branch of biology that involves the scientific study of plant life. Traditionally, botany also included the study of fungi, algae and viruses...

; (7) cosmography

Cosmography

Cosmography is the science that maps the general features of the universe, describing both heaven and Earth...

; and (8) an essay on the four elements

Four elements

Four elements may refer to:* Classical elements, such as air, fire, earth and water* 4 Elements, an album by Chronic Future* Group 4 element, one of the chemical elements in Group 4 of the periodic table...

. The most important is the third part, which contains an illustration showing a human body and a house side by side and comparing the members of the former to the parts of the latter (see illustration).

In part 2 are found an astrolabe

Astrolabe

An astrolabe is an elaborate inclinometer, historically used by astronomers, navigators, and astrologers. Its many uses include locating and predicting the positions of the Sun, Moon, planets, and stars, determining local time given local latitude and longitude, surveying, triangulation, and to...

 and illustrations of astronomical and mathematical instruments. Inserted between parts 6 and 7 is Turkish

Turkish language

Turkish is a language spoken as a native language by over 83 million people worldwide, making it the most commonly spoken of the Turkic languages. Its speakers are located predominantly in Turkey and Northern Cyprus with smaller groups in Iraq, Greece, Bulgaria, the Republic of Macedonia, Kosovo,...

-Latin

Latin

Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

-Spanish

Spanish language

Spanish , also known as Castilian , is a Romance language in the Ibero-Romance group that evolved from several languages and dialects in central-northern Iberia around the 9th century and gradually spread with the expansion of the Kingdom of Castile into central and southern Iberia during the...

 dictionary

Dictionary

A dictionary is a collection of words in one or more specific languages, often listed alphabetically, with usage information, definitions, etymologies, phonetics, pronunciations, and other information; or a book of words in one language with their equivalents in another, also known as a lexicon...

; and prefixed to the work is a poem by Solomon Conegliano.